ISO 11648-2:2001 PDF

Statistical aspects of sampling from bulk materials — Part 2: Sampling of particulate materials

Open preview (PDF)

Title (English):

ISO 11648-2:2001

Statistical aspects of sampling from bulk materials — Part 2: Sampling of particulate materials

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 102
Publication date:: November 1, 2001
Edition:: ISO IS 11648 edition 1 version 1
ICS:: 03.120.30

Delivery type:

Full version25 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:25 €

Description (English):

La présente partie de l'ISO 11648 établit les méthodes de base d'échantillonnage des matériaux particulaires en vrac (par exemples minerais, concentrés minéraux, charbon, produits chimiques industriels en poudre ou en grains, et produits agricoles tels que les grains) prélevés dans des écoulements et en des lieux fixes, y compris l'échantillonnage par bande de manipulation à l'arrêt, afin de produire des échantillons pour mesurer une ou plusieurs variables avec justesse et un degré de fidélité connu. Les variables sont mesurées par analyse chimique et/ou essai physique. Ces méthodes d'échantillonnage s'appliquent aux matériaux qui nécessitent un contrôle afin de vérifier la conformité avec les spécifications produit ou les accords contractuels, en vue de calculer la valeur de la moyenne de lot d'une grandeur mesurable comme base d'accord entre les partenaires, ou d'estimer l'ensemble de variables et de variances qui décrit un système ou une méthode.

Technical details

Technical committee: ISO/TC 69/SC 6 - Measurement methods and results
SKU: ISO 11648-2:2001

Abstract

Overview

ISO 11648-2:2001 - Statistical aspects of sampling from bulk materials - Part 2: Sampling of particulate materials defines statistical methods for taking representative samples of bulk particulate materials (ores, concentrates, coal, powders, granular chemicals, grain) from moving streams and stationary situations. The standard emphasizes dynamic sampling (moving streams) and stopped-belt sampling as the reference method, with the objective of obtaining unbiased measurements of one or more variables (chemical analysis, physical tests) and quantifying the precision of the sampling process. It does not provide acceptance-sampling decision rules.

Key topics and technical requirements

Sampling models and terminology: Definitions for sample, sampling unit, strata, increments, bias and precision.
Principles of sampling: One-dimensional dynamic sampling model for conveyor/stream sampling and limitations of three-dimensional static sampling (stockpiles, wagons, silos).
Sampling schemes: How to establish schemes, choose increment mass, minimize bias, and determine number of increments and gross/sample masses.
Sampling bases: Mass-basis sampling, time-basis sampling, and stratified random/systematic sampling within fixed intervals.
Extraction methods: Mechanical and manual sampling from moving streams, stopped-belt sampling, and sampling from stationary situations with recommended implements.
Sample preparation: Principles, precision and bias control, reduction for moisture, chemical analysis and physical testing.
Measurement quality: Guidance on precision, bias assessment, packing and marking of samples.
Informative annexes: Worked examples, sampling implements, sample preparation schemes, particle-size reduction equipment, mixers and dividers.

Applications and practical value

ISO 11648-2 is used to design and evaluate sampling programs where accurate lot characterization is critical:

Commercial transactions and contract settlements (lot value, lot mean estimation)
Quality control and compliance testing of bulk particulate materials
Laboratory and field sampling procedures to reduce systematic errors (bias) and quantify random error (precision)
Design and validation of sampling equipment (cutters, cross-belt and falling-stream samplers) Using the standard helps organizations produce legally and technically defensible samples for chemical analysis and physical tests.

Who should use this standard

Mining and mineral processing engineers
Coal and bulk commodity producers and traders
Grain and agricultural product handlers
Quality assurance/quality control (QA/QC) professionals and testing laboratories
Sampling equipment manufacturers and metrologists
Statisticians involved in sampling design

Related standards

ISO 11648-1 (General principles)
ISO 3534 (Statistics vocabulary)
ISO 5725 series (Accuracy - trueness and precision)
ISO 565, ISO 3084–3086, ISO 13909 parts, and GUM (Guide to the expression of uncertainty in measurement)

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

Sampling models and terminology: Definitions for sample, sampling unit, strata, increments, bias and precision.
Principles of sampling: One-dimensional dynamic sampling model for conveyor/stream sampling and limitations of three-dimensional static sampling (stockpiles, wagons, silos).
Sampling schemes: How to establish schemes, choose increment mass, minimize bias, and determine number of increments and gross/sample masses.
Sampling bases: Mass-basis sampling, time-basis sampling, and stratified random/systematic sampling within fixed intervals.
Extraction methods: Mechanical and manual sampling from moving streams, stopped-belt sampling, and sampling from stationary situations with recommended implements.
Sample preparation: Principles, precision and bias control, reduction for moisture, chemical analysis and physical testing.
Measurement quality: Guidance on precision, bias assessment, packing and marking of samples.
Informative annexes: Worked examples, sampling implements, sample preparation schemes, particle-size reduction equipment, mixers and dividers.

Applications and practical value

ISO 11648-2 is used to design and evaluate sampling programs where accurate lot characterization is critical:

Commercial transactions and contract settlements (lot value, lot mean estimation)
Quality control and compliance testing of bulk particulate materials
Laboratory and field sampling procedures to reduce systematic errors (bias) and quantify random error (precision)
Design and validation of sampling equipment (cutters, cross-belt and falling-stream samplers) Using the standard helps organizations produce legally and technically defensible samples for chemical analysis and physical tests.

Who should use this standard

Mining and mineral processing engineers
Coal and bulk commodity producers and traders
Grain and agricultural product handlers
Quality assurance/quality control (QA/QC) professionals and testing laboratories
Sampling equipment manufacturers and metrologists
Statisticians involved in sampling design

Related standards

ISO 11648-1 (General principles)
ISO 3534 (Statistics vocabulary)
ISO 5725 series (Accuracy - trueness and precision)
ISO 565, ISO 3084–3086, ISO 13909 parts, and GUM (Guide to the expression of uncertainty in measurement)

ISO 11648-2:2001 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

Related standards

Statistical aspects of sampling from bulk materials — Part 1: General principles

Statistics. Vocabulary and symbols - Statistical quality control

Accuracy (trueness and precision) of measurement methods and results - Basic methods for the determination of…

Plastics - Smoke generation - Determination of optical density by a single-chamber test (ISO 5659:2026)

Hard coal and coke — Mechanical sampling — Part 3: Coal — Sampling from stationary lots